00556naa#a2200181#i#450# EN\INFRA-M\bibl\4545 /en/manage/index 20250228020212.5 2587-6279 20141217b2014####ek#y0engy0150####ca RUS RU Mathematical Models of Project Portfolio Formation: Evolution, Typology, Future Journal article Moscow INFRA-M Academic Publishing LLC. 2014 20 с. Journal article local Petrenko Elena fht.editorum.ru /en/manage/index